Related Clues:

• '-- a go!'
• "__ now or never!"
• '___ O.K.'
• 'If -- Tuesday, ...'
• '___ Now or Never'
• "___ impossible"
• "___ no use"
• '-- magic!'
• ''___ a Long Way to Tipperary''
• Word often given an unnecessary apostrophe
• '-- over!'
• Oft-mistyped possessive
• ''. . . ___ how you play the game''
• Word often typed with an extraneous apostrophe
• With 57-Across, welcome words when the check arrives